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Fig. 29a. Layout of Wire-Cable Suspension-Bridge 271
Fig. 29b. Layout of Eye-bar-Cable Suspension-Bridge 271
Fig. 29c. Quantities for Wire-Cable Suspension-Bridges 276
Fig. 29d. Weights of Alloy-Steel Eye-bars in Eye-bar-Cable Suspension-Bridges 277
Fig. 29e. Quantities of Various Materials in Eye-bar-Cable Suspension Bridges 278
CHAPTER XXX
ECONOMICS OF MOVABLE SPANS
Fig. 30a. Layout for Proposed Hoogly River Bridge at Calcutta,
India (facing P. 296)
Fig. 30b. Percentage Weights for Double-Track-Railway, Vertical-Lift Bridges
and Single-Leaf, Heel-Trunnion Bascules 299
Fig. 30c. Layouts with No Flanking Truss-Spans 300
Fig. 30d. Layouts with Flanking Truss-Spans 300
Fig. 30e. Comparative Costs of Double-Track-Railway, Vertical-Lift Bridges
and Single-Leaf, Heel-Trunnion Bascules 302
Fig. 30f. Clear Channels and Clear Heights for Equal Costs of Double-Track
Railway, Vertical-Lift Bridges and Single-Leaf, Heel-Trunnion Bas-
cules 303
Fig. 30g. Layouts with Flanking Truss-Spans—Bascule Tower Cantilevered 304
CHAPTER XXXII
POSSIBILITIES AND ECONOMICS OF THE TRANSBORDEUR
Fig. 32a. Layout of Proposed Transbordeur for Crossing the Mississippi River
at New Orleans, La. (facing P. 322)
Fig. 32b. Second Preliminary Study for Proposed New Orleans Transbordeur 326
Fig. 32c. Third Preliminary Study for Proposed New Orleans Transbordeur 329
Fig. 32d. Fourth Preliminary Study for Proposed New Orleans Transbordeur 329
Fig. 32e. Ratios of Costs of Fixed-Span Bridges and their Approaches for
various Clearances above High Water 331
Fig. 32f. Proposed Bridge across the Entrance Channel to the Harbor of Havana,
Cuba 333
Fig. 32g. General Layout for a Proposed Transbordeur to Cross Havana Harbor,
Cuba (facing P. 334)
CHAPTER XXXIII
ECONOMICS OF CONTRACT LETTING
Fig. 33a. Total Percentage of Saving on Limiting Cost to Client 346
Fig. 33b. Diagram of Corrective Ratios 347
CHAPTER XLI
ECONOMICS OF MAINTENANCE AND REPAIRS
Fig. 41a. Diagram Showing Classification of U. S. Government, Standard
Locomotives 413
Fig. 41b. Diagram Showing Classification of Typical Loadings 413
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